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SCHOTT North America
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Technical Data |
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1. Mechanical Characteristics |
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1.1 |
Density |
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1.2 |
Modulus of Elasticity |
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The test is carried out following DIN 13316.
A tensile or compressive load is applied to a rod-shaped test piece to produce a change in length, the amount of which depends on the material and the load. The modulus of elasticity describes the relationship between the tension and the material’s change in length.
Example:
Low modulus of elasticity: High deformation or deformation at low stress
High modulus of elasticity: Low deformation or deformation only under high stress
In comparison: Rubber has a modulus of elasticity of 0,05 kN/mm2, aluminium has 73 kN/mm2 and glass has 60–90 kN/mm2.
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1.3 |
Bending Strength |
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The bending strength testing is to be accomplished according to
DIN EN 1288 part 5 (R45).
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| approx. 35 MPa |
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2. Thermal Characteristics |
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2.1 |
Coefficient of Mean Linear Expansion |
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α(20 - 700°C)
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(0 ± 0.5) x 10-6 /K
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2.2 |
Resistance to Temperature Differences (RTD) |
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Resistance of the panel to temperature differences between heated zone and cold panel edge (room temperature).
No cracking due to thermal stress at Tes, max1) £ 700°C
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2.3 |
Thermal Shock Resistance |
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Resistance of the panel to thermal shock when the hot panel is quenched with cold water (room temperature).
No cracking due to thermal stress at Tes, max £ 700°C
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2.4 |
Temperature / Time Load Capacity
(under consideration of items 2.2 and 2.3)
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The value pairs specified in the following table 2.1 are relevant to the practical use of the glass- ceramic material as fireplace panel. The temperature values refer to the hottest point on the exterior side of the panel (Tes, max) because this temperature can be measured more easily and more reliably. |
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| Load temperature Tes, max |
Load time |
560°C (1040°F)
610°C (1130°F)
660°C (1220°F)
710°C (1310°F)
760°C (1400°F)
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5000 h
1000 h
100 h
10 h
5 h
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Table 2.1: Temperature / time load capacity for ROBAX® panels |
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Note:
For ROBAX® fireplace panels the temperature / time load capacity specified in table 2.1 must be maintained. It must be ensured that this temperature / time load capacity is not exceeded during use, to prevent cracking due to thermal stress.
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2.5 |
Transmission for ROBAX® (transparent glass-ceramic) |
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These graphs are based on individual measurements. Therefore, production.related variations may occur. |
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ROBAX®, 4 mm
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ROBAX®, 4 mm, in UV range
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3. Chemical Characteristics of Base Material |
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3.1 |
Acid Resistance |
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DIN 12116
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at least class S3
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3.2 |
Alkaline Resistance |
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based on ISO 695
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at least class A2
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3.3 |
Hydrolytic Class |
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3.4 |
Change of Surface due to Use |
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ROBAX® has a good resistance against chemical surface attack. In isolated cases and under special critical conditions, e.g. aggressive exhaust gases (acidification at high temperatures) changes of the surface may occur. For such applications practice tests have to be carried out before being used. |
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If you have any questions, or would you like to request product information?
Please contact us:
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Home Tech
SCHOTT North America, Inc.
5530 Shepherdsville Road
Louisville, KY 40228
USA
Phone: +1 (502)657-4418
Fax: +1 (502)966-4976
 E-mail
www.us.schott.com/hometech
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Business Contact |
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Home Tech
SCHOTT North America, Inc.
5530 Shepherdsville Road
Louisville, KY 40228
USA
 +1 (502)657-4418
 +1 (502)966-4976
E-mail
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 more contacts
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